Neela Saraswathi stotram

(Neela Saraswathi or Blue Saraswathi is a form of Tara devi , a fierce form of the goddess. Some people refer to her as Nila devi, who is the third wife of Lord Vishnu. The ritual to please her is described in
http://vedas-tantra-aghora.blogspot.com/2009/11/neela-saraswathi-sadhana.html .